◎ 题干
-Hurry up. The bus is coming.    
-Wait a moment. Don't cross the street ________ the traffic(交通) lights are green.
[     ]
A. after
B. until    
C. while            
D. since
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“-Hurry up. The bus is coming.-Wait a moment. Don't cross the street ________ the traffic(交通) lights are green.[ ]A. after B. until C. while D. since…”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。